- 2 bd
- 2 ba
- 1,120 sqft

The average Contra Costa County, CA home value is $768,394, down 0.5% over the past year, and homes go to pending in around 22 days. (Updated on )
Zillow Home Value Index (ZHVI), built from the ground up by measuring monthly changes in property level Zestimates, captures both the level and home values across a wide variety of geographies and housing types.
Typical Home Values: $768,394
1-Year Value Change: -0.5%
(Data through September 30, 2026)
Zillow is more than a place to browse homes. It’s a place to connect with a local agent, explore financing solutions, schedule home tours, understand your buying and selling power, and more.
The median home value in Contra Costa County, CA is $768,394 as of September 2026. This represents a 0.2% increase compared to last month and a 0.5% decrease year-over-year.
The median home value in Contra Costa County, CA ($768,394) compares to California ($761,538) and the U.S. national median ($366,157).
The cities with the highest median home values in Contra Costa County, CA include: Diablo ($3,102,551), Alamo ($2,529,452), Orinda ($1,942,797), Lafayette ($1,907,310), Danville ($1,821,427). These cities represent the most expensive areas within the county.